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首页> 外文期刊>IEEE Transactions on Industry Applications >Protective relay setting of the tie line tripping and load shedding for the industrial power system
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Protective relay setting of the tie line tripping and load shedding for the industrial power system

机译：工业电力系统联络线跳闸和甩负荷的保护继电器设置

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摘要

This paper presents the proper underfrequency relay settings to enhance the operation of industrial power systems with cogeneration facilities. A cogeneration unit was installed in the plant in 1996 to supply the power demand of the plant. The cogeneration unit always faces the shutdown problem when a severe fault occurs on the nearby Taipower network. It is, therefore, necessary to investigate plant protective relay settings to prevent a whole plant blackout when the contingency occurs. A transient stability analysis has been performed by considering both the detailed models of the cogenerators with the governor and exciter control systems and the external utility power system. The underfrequency relay settings for tie line tripping and load shedding are designed to prevent the tripping of the cogeneration units so that the electricity service to the critical loads of the industrial customer can be maintained in case serious external disturbances such as short circuit faults occur. In this study, the scheme of underfrequency relay settings has been developed for the power system of a large synthetic rubber manufacturer with a large cogeneration unit. Three study cases have been selected for the transient stability analysis to verify the effectiveness of the proposed protective relay setting.
机译：本文提出了适当的低频继电器设置，以增强带有热电联产设施的工业电力系统的运行。 1996年在该工厂安装了一个热电联产装置，以满足该工厂的电力需求。当附近的台电网络发生严重故障时，热电联产机组始终面临关机问题。因此，有必要调查工厂保护继电器的设置，以防止在发生紧急情况时整个工厂停电。通过考虑带有调节器和励磁机控制系统的热电联产机的详细模型以及外部市电系统，进行了暂态稳定性分析。用于联络线跳闸和甩负荷的低频继电器设置旨在防止热电联产机组跳闸，以便在发生严重外部干扰（例如短路故障）时维持对工业客户关键负载的电力服务。在这项研究中，为大型合成橡胶制造商和大型热电联产机组的电力系统开发了低频继电器设置方案。选择了三个研究案例用于瞬态稳定性分析，以验证所提出的保护继电器设置的有效性。

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